A relatively thin metallic item, having a concave or cupped contour, designed to effect its own seal by compression against the circumference of a hole. It is used as a blowout plug in boilers, engines, and the like to relieve the pressure created by the expansion of fluids caused by heat or freezing.
Classification: Parts for steam or other vapor generating boilers and super-heated water boilers, except heat exchangers
NSN 6135-00-269-5843
NSN 7035-01-123-8723
NSN 5945-00-440-0516
NSN 6105-01-030-7979
NSN 5990-00-578-8850
NSN 6150-01-411-5216
NSN 5895-01-008-7888
NSN 5925-01-444-4503
NSN 5999-00-803-8784
NSN 5855-01-013-6864
NSN 4140-01-453-7615
NSN 6105-00-988-2471